* {
    margin: 0;
    padding: 0;
}

#app {
    width: 100vw;
    height: 100vh;
}

.row {
    display: flex;
    flex-direction: row;
}

.col {
    display: flex;
    flex-direction: column;
}

.row-all-center {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.w100vw {
    width: 100vw;
}

.h100vh {
    height: 100vh;
}

.el-input.w200px {
    width: 200px;
}
.pd20px{
    padding: 20px;
}